PEM® RT® free-running locknuts are free-running until clamp load is induced. A modified thread angle on the loaded flank provides the vibration resistant locking feature.
- Screw turns freely until a clamp load is applied.
- Resistant to vibrational loosening.
- Back side of panel is flush or sub-flush for screw installation.
- Locking feature reusability is not affected by number of on/off cycles.
- Uses same mounting hole and installation tooling as standard S™ nut fasteners found in PEM® Bulletin CL.
Part # |
Thread Size x Pitch |
A (Shank) Max. |
Hole Size in Sheet + 0.08 |
E ± 0.25 |
Fastener Material |
Standard Finish |
Optional Finish |
CAD |
|---|---|---|---|---|---|---|---|---|
 | ||||||||
| S-RTM8-1ZC | N/A M8 x 1.25 | N/A 1.38 mm | N/A 10.49 mm | N/A 12.7 mm | N/A Hardened Carbon Steel | N/A | N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow |
N/A 
|
| S-RTM8-2ZI | N/A M8 x 1.25 | N/A 2.21 mm | N/A 10.49 mm | N/A 12.7 mm | N/A Hardened Carbon Steel | N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | N/A |
N/A
|
| S-RTM8-2ZC | N/A M8 x 1.25 | N/A 2.21 mm | N/A 10.49 mm | N/A 12.7 mm | N/A Hardened Carbon Steel | N/A | N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow |
N/A
|
| S-RTM6-2ZC | N/A M6 x 1 | N/A 2.21 mm | N/A 8.75 mm | N/A 11.18 mm | N/A Hardened Carbon Steel | N/A | N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow |
N/A
|
| S-RTM6-2ZI | N/A M6 x 1 | N/A 2.21 mm | N/A 8.75 mm | N/A 11.18 mm | N/A Hardened Carbon Steel | N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless | N/A |
N/A
|
